How many pairs of sacral spinal nerves does a person have?

A person has 5 pairs of sacral spinal nerves, corresponding to the sacral region of the spinal column. These nerves emerge from the sacral vertebrae, which are located at the base of the spine and play a crucial role in transmitting signals between the lower body and the central nervous system.

Each pair of sacral spinal nerves consists of a dorsal (sensory) root and a ventral (motor) root, contributing to the formation of the sacral plexus, which is vital for motor and sensory innervation of the pelvic region, lower limbs, and some trunk areas. The correct identification of the number of sacral spinal nerves is significant in understanding human anatomy, particularly within the context of the nervous system and its functions in movement and sensation.

The other options provided do not align with the established anatomical understanding; the spinal column comprises a total of 31 pairs of spinal nerves, but only 5 pairs specifically correspond to the sacral region.